Optical fiber cable
a technology of optical fiber and fiber cable, applied in the field of optical fiber cable, can solve the problems of damage to the optical fibers within the optical fiber cable, and achieve the effects of preventing the damage to the optical fiber, cutting off the reinforcing sheet, and improving the workability of the operation of taking out the optical fibers
Active Publication Date: 2018-04-19
THE FUJIKURA CABLE WORKS LTD
View PDF2 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The present invention provides an optical fiber cable that can prevent damage to the optical fibers caused by animal bites and has improved workability when extracting the optical fibers. The cable has a reinforcing sheet that is positioned in a way that allows for a reliable cutting off of the sheet, which improves the workability of the cable's operation. Additionally, the reinforcing sheet surrounding the cable main body prevents damage to the optical fibers due to feeding damage caused by animals.
Problems solved by technology
With an increase in the use of optical fiber cables, there have been cases where optical fibers within the optical fiber cable are damaged due to the cable being bitten by an animal, such as a rat or a squirrel.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025]Hereinafter, one or more embodiments of the present invention will be described with reference to the accompanying drawings.
[0026]FIG. 1 is a cross-sectional view showing an optical fiber cable 10 according to a first example of one or more embodiments of the present invention. FIG. 1 is a cross-sectional view perpendicular to the longitudinal direction of the optical fiber cable 10. FIG. 2 is a perspective view showing the structure of the optical fiber cable 10. FIG. 3 is a perspective view showing an example of a core 5 which is used for the optical fiber cable 10.
[0027]Note that the longitudinal direction of the optical fiber cable 10 may be referred to as a “cable longitudinal direction”.
[0028]In FIG. 1, the cable longitudinal direction is a direction perpendicular to a paper surface. In addition, the circumferential direction (circumferential direction in a surface perpendicular to the cable longitudinal direction) of the cable main body 1 may be referred to as a “cable ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
An optical fiber cable includes: a cable main body including a core that includes optical fibers, at least a pair of tension members that face each other with the core interposed therebetween, and an inner sheath that covers the core and the tension members; a cylindrical outer sheath that accommodates the cable main body; a reinforcing sheet provided between the cable main body and the outer sheath; and a rip cord provided between the reinforcing sheet and the cable main body. The reinforcing sheet surrounds an entire circumference of the cable main body, the reinforcing sheet includes an overlapping portion in which portions of the reinforcing sheet overlap each other in a portion in a circumferential direction of the cable main body, and the reinforcing sheet is formed of a metal.
Description
TECHNICAL FIELD[0001]The present invention relates to an optical fiber cable.[0002]Priority is claimed on Japanese Patent Application No. 2015-201276, filed on Oct. 9, 2015, the content of which is incorporated herein by reference.BACKGROUND ART[0003]With an increase in the use of optical fiber cables, there have been cases where optical fibers within the optical fiber cable are damaged due to the cable being bitten by an animal, such as a rat or a squirrel. In response, measures such as the provision of a protection structure, for example, a metal tape, which surrounds optical fibers have been taken (for example, see Patent Document 1 and Patent Document 2).PATENT DOCUMENTS[0004][Patent Document 1] Japanese Unexamined Patent Application, First Publication No. H6-174985[0005][Patent Document 2] Japanese Unexamined Patent Application, First Publication No. 2013-228567SUMMARY[0006]However, in the optical fiber cable, there has been a difficulty in cutting off an outer sheath due to th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & AuthorityApplications(United States)
IPC IPC(8): G02B6/44
CPCG02B6/4495G02B6/4433G02B6/4435G02B6/4431G02B6/44
InventorOHNO, MASATOSHITAKEDA, DAIKIOSATO, KEN
OwnerTHE FUJIKURA CABLE WORKS LTD